Re: [PATCH V10 09/11] fs: Lift XFS_IDONTCACHE to the VFS layer

[Dave Chinner]

On Wed, Apr 22, 2020 at 02:21:00PM -0700, ira.weiny@xxxxxxxxx wrote:
> From: Ira Weiny <ira.weiny@xxxxxxxxx>
> 
> DAX effective mode (S_DAX) changes requires inode eviction.
> 
> XFS has an advisory flag (XFS_IDONTCACHE) to prevent caching of the
> inode if no other additional references are taken.  We lift this flag to
> the VFS layer and change the behavior slightly by allowing the flag to
> remain even if multiple references are taken.
> 
> This will expedite the eviction of inodes to change S_DAX.
> 
> Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> Reviewed-by: Jan Kara <jack@xxxxxxx>
> Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>

Looks good.

Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>

-- 
Dave Chinner
david@xxxxxxxxxxxxx